A wire is $12\,\text{cm}$ long and has a total of $5.1 \times 10^{22}$ free electrons. If a potential difference is applied across the two ends of the wire, the free electrons drift with an average speed of $4.0 \times 10^{-6}\,\text{m s}^{-1}$. Calculate the current in the wire.
- A$0.0027\,\text{A}$
- B$0.0039\,\text{A}$
- C$0.27\,\text{A}$
- D$0.39\,\text{A}$